﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace com.huawei.esdk.tp.professional.Utils
{
    public abstract class StringUtils
    {
        public static bool isNullOrEmpty(string str)
        {
            if (null == str ||  "".Equals(str) || str.Length == 0)
            {
                return true;
            }
            return false;
        }
    }
}
